Combining the diagnostic parameters of the CT protocol can yield diagnostic results comparable to those with previously reported longer dynamic enhanced CT protocols.
These results suggest that pretreatment primary tumor SUV(max) and ADC correlate significantly and negatively and both may have similar potential to predict DFS or disease events of HNSCC.
We encountered a 9-year-old Japanese girl with Alagille syndrome. Her scintigraphic examinations of the liver were performed at the ages of 16 months and 9 years. 99mTc-PMT, a hepatobiliary imaging agent, was distributed homogeneously in the liver at the younger age, but unevenly produced an area of focally increased uptake in the medial segment of the liver surrounded by peripheral atrophy at the older age. 99mTc-GSA, a hepatoreceptor binding agent, was highly accumulated in the area, corresponding to the focally increased uptake of 99mTc-PMT. These imaging findings suggest that the pathophysiological and morphological changes of the liver occurred in our patient during the clinical course.
We encountered two cases of epithelial-myoepithelial carcinoma (EMC), a rare low-grade malignant tumor of the parotid gland. These two EMCs showed similar imaging findings: gradual contrast enhancement on dynamic magnetic resonance imaging (MRI), intense (18)F-fluorodeoxyglucose (FDG) uptake in the solid tumor portion, and little enhancement and little FDG uptake in the hemorrhagic necrotic tumor portion. When a parotid gland tumor shows gradual MRI contrast enhancement and focally intense FDG uptake, EMC should be included in the differential diagnosis.
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